00337nam a2200121Ia 4500020001500000082002100015100002000036245007500056260004500131300002900176500000500205700000500210  a1891853120  a333.72bSt839.PI  aSterner, Thomas  aPolicy instruments for environmental and natural resource managementb  aBaltimorebResource for the Futurec2002  axxii, 504p. Bibl. Index.  a  a